CAN ANY ONE HELP ME WITH THIS , I JUST TOOK MY 328 TO GET CHECK ON A COMPUTER SYSTEM AND THESE CODES CAME UP ,,, 169 ENGINE TROTTLE OUTPUT ,,, 68 ACTIVATION SOLENOID VALVE, TANK VENTILATION {0BDII:P0443; EUIII:P0443} CAN ANY ONE TELL ME WHAT I NEED TO DO OR WHAT PART TO GET, THE MECHANIC SAID THE VALVES NEED CLEANING AND TROTTLE SYSTEM NEEDS CLEANING AND SOME ONE SAID THEY HAD CHANGE THERE TROTTLE BODY.THANKS